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CVE-2021-39859— Use After Free Adobe Acrobat Pro DC [HB-21-0339]

Quick assessment

Affected
Adobe Acrobat Reader
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Adobe Acrobat是美国奥多比（Adobe）公司的一套PDF文件编辑和转换工具。 Adobe Acrobat 和 Reader存在资源管理错误漏洞，该漏洞的存在是由于一个NULL指针解除引用错误。远程攻击者可利用该漏洞可以欺骗受害者打开一个特制的文件并执行拒绝服务(DoS)攻击。该漏洞允许远程攻击者可利用该漏洞执行拒绝服务(DoS)攻击。

CVSS 5.5 · Medium EPSS 0.44% · P36
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I. Basic Information for CVE-2021-39859

Vulnerability Information
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Vulnerability Title
Use After Free Adobe Acrobat Pro DC [HB-21-0339]
Source: CVE Program / CVE List V5
Vulnerability Description
Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Use After Free vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Adobe Acrobat 和 Reader 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Adobe Acrobat是美国奥多比（Adobe）公司的一套PDF文件编辑和转换工具。 Adobe Acrobat 和 Reader存在资源管理错误漏洞，该漏洞的存在是由于一个NULL指针解除引用错误。远程攻击者可利用该漏洞可以欺骗受害者打开一个特制的文件并执行拒绝服务(DoS)攻击。该漏洞允许远程攻击者可利用该漏洞执行拒绝服务(DoS)攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Adobe Acrobat Reader 0 ~ 2021.005.20060 -

II. Public POCs for CVE-2021-39859

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III. Intelligence Information for CVE-2021-39859

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Vendor Advisories for CVE-2021-39859 (1)

Same Patch Batch · Adobe · 2023-09-06 · 8 CVEs total

CVE-2021-36023 9.1 CRITICAL Magento Commerce Widgets Update Layout XML Injection Vulnerability Could Lead To Remote Co
CVE-2021-21088 7.8 HIGH Adobe Acrobat Pro DC Use-After-Free Remote Code Execution Vulnerability
CVE-2021-35980 7.8 HIGH Adobe Acrobat Reader SpellDictionaryExport Path Traversal Remote Code Execution Vulnerabil
CVE-2021-28644 7.8 HIGH Adobe Acrobat SpellDictionaryCreate Path Traversal Remote Code Execution Vulnerability
CVE-2021-36036 7.2 HIGH Magento Commerce Media Gallery Upload Improper Access Control Could Lead To Remote Code Ex
CVE-2021-36021 7.2 HIGH Magento Commerce CMS Page Improper Input Validation Could Lead To Remote Code Execution
CVE-2021-36060 5.5 MEDIUM Adobe Media Encoder MPEG File Parsing Out-Of-Bounds Read Information Disclosure Vulnerabil

IV. Related Vulnerabilities

Same product: Acrobat Reader
Same vendor: Adobe
Same weakness: CWE-416

V. Comments for CVE-2021-39859

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